Unitrends Enterprise Backup
can be deployed as a virtual appliance upon the entire family of VMware
ESX, ESXi and now ESXi Free; protect virtual AND physical environments,
and have truly heterogeneous protection (100+ versions of operating
systems and applications)

Unitrends Free Edition and Free ESXi – it’s official.Unitrends takes great pride in being an industry innovator and creating products that enhance the customer value of VMware ESX, ESXi, and ESXi Free. Today, we're thrilled to announce support for the free edition of VMware ESXi.